Decoded jwt code example

Example 1: javascript token generator

function generate_token(length){
    //edit the token allowed characters
    var a = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890".split("");
    var b = [];  
    for (var i=0; i<length; i++) {
        var j = (Math.random() * (a.length-1)).toFixed(0);
        b[i] = a[j];
    }
    return b.join("");
}
generate_token(32); //returns "qweQj4giRJSdMNzB8g1XIa6t3YtRIHPH"

Example 2: js jwt decode

import jwt_decode from "jwt-decode";
var token = "eyJ0eXAiO...";
var decoded = jwt_decode(token);
console.log(decoded);

/* prints: * { foo: "bar", *   exp: 1393286893, *   iat: 1393268893  } */

Example 3: jsonwebtoken

RSASHA256(
  base64UrlEncode(header) + "." +
  base64UrlEncode(payload),
  ,
  
)

Example 4: local jwt decode

import jwt_decode from "jwt-decode";

var token = "eyJ0eXAiO.../// jwt token";
var decoded = jwt_decode(token);

console.log(decoded);

/* prints:
 * { foo: "bar",
 *   exp: 1393286893,
 *   iat: 1393268893  }
 */

// decode header by passing in options (useful for when you need `kid` to verify a JWT):
var decodedHeader = jwt_decode(token, { header: true });
console.log(decodedHeader);

/* prints:
 * { typ: "JWT",
 *   alg: "HS256" }
 */